修复数据库迁移

tests/Jiaowu.Api.Tests/MySqlMigrationTests.cs

@@ -313,6 +313,26 @@ public sealed class MySqlMigrationTests
             $"MySQL index name '{name}' has {name.Length} characters."));
     }
 
+    [Fact]
+    public void Campus_registration_migration_uses_mysql_safe_foreign_key_names()
+    {
+        using var db = new AppDbContext(CreateMySqlOptions());
+
+        var script = db.GetService<IMigrator>().GenerateScript(
+            fromMigration: "20260822085356_GradeAnalyticsCommentInteractions",
+            toMigration: "20260822100000_CampusWalletBalances");
+
+        Assert.Contains("CREATE TABLE IF NOT EXISTS `CampusRegistrationProjects`", script);
+        Assert.Contains("CONSTRAINT `FK_CRA_Project`", script);
+        Assert.DoesNotContain(
+            "FK_CampusRegistrationApplications_CampusRegistrationProjects_ProjectId",
+            script);
+        Assert.Contains("CONSTRAINT `FK_CWT_Account`", script);
+        Assert.DoesNotContain(
+            "FK_CampusWalletTransactions_CampusWalletAccounts_WalletAccountId",
+            script);
+    }
+
     [Fact]
     public void Application_mysql_connections_allow_migration_user_variables()
     {